英语词汇“pump drill”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	pump drill
释义	pump drill noun : a primitive drill in which the shaft is revolved by working up and down a bow or bar carrying a cord attached at the center to the upper end of the shaft
随便看	coeteris paribus coeternal coeternally coeternity coeur coeur a la creme coeur d'alene coeur à la crème coeval coevality coevolution coevolutionary coevolve coexist coexistence coexistence coexistent coextended coextension coextensive coextensively cofactor cofan C of B C of C

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